The Bureau of Alcohol, Tobacco, Firearms and Explosives (ATF) authorizes an alternate method or procedure to the firearms marking requirements contained in title 27, Code of Federal Regulations (CFR), sections 478.92 and 479.102. Specifically, ATF authorizes licensed manufacturers of certain destructive device munitions that are manufactured for and transferred to the U.S. Government (USG) to mark these destructive device munitions with sequential lot numbers, provided conditions set forth in this ruling are met.